SPOT System Occupant Detection and Climate Control for Vehicle Safety
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Solution Overview
Problem
Current vehicle safety systems lack effective sensors to monitor occupants in stationary vehicles, particularly in conditions where heat-related injuries or theft can occur, such as when vehicles are parked in direct or indirect sunlight.
Innovation Solution
The SPOT system employs a network of wireless sensors and an electronic control unit (ECU) to detect occupant presence and temperature, sending alerts via a cloud-based server and activating preventative measures, including local actions like lowering windows or turning on the air conditioner, to prevent heat-related injuries and alert owners or authorities of potential theft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicle safety systems focus on mechanical control and motion systems, then vehicle control reliability is improved, but occupancy monitoring capability in stationary conditions deteriorates
Solution Approach 1:
The existing vehicle ECU and sensor network are extended to perform dual functions: maintaining mechanical control reliability during motion while simultaneously providing occupancy monitoring and heatstroke prevention capabilities when stationary. The system adapts the same hardware infrastructure for multiple safety purposes.
Solution Approach 2:
The system dynamically switches between motion control mode and stationary occupancy monitoring mode. Sensors and ECUs that are active during vehicle operation are repurposed and activated for heatstroke prevention when the vehicle is parked, optimizing resource utilization across different operational states.
2Reliability
If sensors are deployed for mechanical control systems, then vehicle operation safety is improved, but sensor coverage for stationary occupancy detection deteriorates
Solution Approach 1:
Existing mechanical sensors (accelerometers, pressure sensors, cameras) are configured to serve dual purposes: vehicle operation safety during motion and occupancy detection when stationary. The same sensor array detects both road conditions during driving and occupant presence during parking.
Solution Approach 2:
The vehicle's existing sensor infrastructure serves itself by automatically transitioning from mechanical control functions to occupancy monitoring functions when the vehicle transitions from motion to stationary state, without requiring separate dedicated sensor systems.
3Loss of information
If network connectivity is available for cloud-based monitoring, then remote alert capability is improved, but local response capability deteriorates
Solution Approach 1:
The system pre-configures local automated responses (window activation, AC engagement) that can execute immediately without network dependency. These preliminary actions are standing by and activate automatically when heatstroke conditions are detected, ensuring local response capability is maintained independent of cloud connectivity.
Solution Approach 2:
The system implements local feedback loops where sensors detect conditions and automatically trigger protective actions without requiring remote confirmation. This closed-loop local feedback ensures immediate response capability while cloud connectivity provides supplementary remote notification and monitoring capabilities.
Data Source
AI summary
A system functions as a safeguard against vehicular heat-related deaths (heatstroke-hyperthermia) or injuries, as well as providing for theft security in vehicles. This system will incorporate a combination of hardware and software components locally within the vehicle and externally ‘Cloud’ based. At the vehicular level, the hardware involves sensors to detect various pertinent data which in turn is fed into an Electronic Control Unit (ECU). Here the data is collected, processed and stored locally. The software includes algorithms that interact from the ECU to the Cloud server and subsequently to various Internet of Things devices. If certain set thresholds are met upon data analysis at the ECU, this triggers an ‘event’ and packets of data is streamed via a network to ‘SPOT’, the Cloud based component for subsequent lifesaving notifications, or if no network connectivity available then evasive preventative measures are executed by the system ECU locally.